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arXiv · 2502.06222

Laser intensity noise suppression for space-borne gravitational wave mission

Fan Li·Xin Shang·Zhenglei Ma·Jiawei Wang·Long Tian·Shaoping Shi·Wangbao Yin·Yuhang Li·Yajun Wang·Yaohui Zheng
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Abstract

Laser intensity noise is a main limitation of measurement and sensing mission represented by gravitational wave detection. We develop a noise decomposition model and design the core elements of the feedback loop independently based on the analysis results. We construct a fiber amplifier system with ultra-low intensity noise in the 0.1 mHz-1 Hz frequency band by the employment of an optoelectronic feedback loop that is specially designed. The study provides experimental basis and technologies for precise measurement and sensing system at ultra-low frequency.

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Fan Li, Xin Shang, Zhenglei Ma, Jiawei Wang, Long Tian, Shaoping Shi, Wangbao Yin, Yuhang Li, Yajun Wang, Yaohui Zheng. 2025-02-10. Laser intensity noise suppression for space-borne gravitational wave mission. https://arxiv.org/abs/2502.06222

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